TCG Copyright 2016 IF-M Segmentation
Specification Version 1.0
Revision 5 Page iv of 44 04 April 2016
Table of Contents
1 Introduction ............................................................................................................ 1
1.1 Scope and Audience ..................................................................................................................... 1
1.2 Keywords ....................................................................................................................................... 3
1.3 Definitions ...................................................................................................................................... 3
2 Background ............................................................................................................ 4
2.1 Role of IF-M Segmentation ........................................................................................................... 4
2.2 Supported Use Cases ................................................................................................................... 4
2.2.1 Support Limits on Message Sizes below the Maximum Allowed Size ...................................... 4
2.2.2 Support Sending Messages Piecemeal .................................................................................... 4
2.2.3 IF-M Use Cases ........................................................................................................................ 5
2.3 Non-supported Use Cases ............................................................................................................ 5
2.3.1 Unilateral Imposition of Segmentation Contracts ...................................................................... 5
2.3.2 Support for Non-Exclusive Delivery .......................................................................................... 5
2.3.3 Support for Contract Initiation or Modification by Contracted Party .......................................... 5
2.4 Specification Requirements .......................................................................................................... 5
2.5 Non-Requirements ........................................................................................................................ 6
2.6 Assumptions .................................................................................................................................. 6
2.7 IF-M Segmentation Diagram Conventions .................................................................................... 6
3 IF-M Segmentation Exchanges and Processing .................................................. 8
3.1 The Segmentation Contract .......................................................................................................... 8
3.2 Establishing a Segmentation Contract .......................................................................................... 9
3.2.1 IF-M Segmentation Attributes and the IF-TNCCS IF-M Subtype ............................................ 10
3.2.2 Limits on Segmentation Contract Sizes .................................................................................. 10
3.2.3 Allowing Segmented Message Exchanges ............................................................................. 11
3.3 Modifying a Segmentation Contract ............................................................................................ 11
3.4 Terminating a Segmentation Contract ........................................................................................ 12
3.5 Applying a Segmentation Contract ............................................................................................. 12
3.5.1 Sending Messages .................................................................................................................. 13
3.5.2 Segmented Message Exchanges ........................................................................................... 16
3.5.3 Violations of Segmentation Contracts ..................................................................................... 19
3.6 Multi-Component Parties ............................................................................................................. 20
3.7 Error Handling ............................................................................................................................. 22
3.7.1 Errors that Cancel Segmentation Contracts ........................................................................... 22
3.7.2 Errors that Cancel Segmented Message Exchanges ............................................................. 22
3.7.3 Reaching Limits on Supported IF-M Segmentation Activities ................................................. 22
3.7.4 Errors in the Base Message Delivered by a Segmented Message Exchange ....................... 23
3.7.5 IF-M Segmentation Attributes and Externally Defined IF-M Errors ......................................... 23
4 IF-M Segmentation Message and Attributes ...................................................... 25
4.1 IF-M Subtype (AKA IF-M Component Type) ............................................................................... 25
4.2 IF-TNCCS and IF-M Messages ................................................................................................... 25
4.3 IF-M Attribute Header .................................................................................................................. 26
4.4 IF-M Segmentation Attribute Overview ....................................................................................... 26
4.5 IF-M Segmentation Attribute Enumeration .................................................................................. 27
4.6 Segmentation Contract Request ................................................................................................. 28
4.7 Segmentation Contract Response .............................................................................................. 29
4.8 Segment Envelope ...................................................................................................................... 30
4.9 Next Segment.............................................................................................................................. 32
4.10 Cancel ......................................................................................................................................... 33
4.11 Oversized Message .................................................................................................................... 34
4.12 Contract Exemption ..................................................................................................................... 35
4.13 IF-M Error as Used by IF-M Segmentation ................................................................................. 36
4.13.1 TNC_IFM_SEG_CONTRACT_REJECTED Information ..................................................... 37
